Pyridine → HCID 67264027, compound

Participants

Reaction Steps

(1S,2S,3R,4R)-3-tert-Butoxycarbonylamino-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid (6.66 g, 26.3 mmol;), Di-tert-Butyldicarbonate (8.6 g, 39 mmol;) and Pyridine (3.8 mL, 47 mmol) were added to 1,4-Dioxane (40 mL, 500 mmol) and the reaction stirred for 30 minutes at room temperature. Ammonium Bicarbonate (5.8 g, 74 mmol;) was added, and the reaction mixture was stirred overnight. The reaction was quenched by addition of water. Extraction (2×) with EtOAc, washing 2× with 0.1 N HCl, and once w/brine, drying (MgSO4), concentration, provided ((1R,2R,3S,4S)-3-Carbamoyl-bicyclo[2.2.1]hept-5-en-2-yl)-carbamic acid tert-butyl ester as a white solid (6.47 grams).

Provenance & Evidence